Content（with up to2% conditionin agents and anticaking agents,on dry basis）  %

97.5-100.5

99.0

Content（with anticaking agents on dry basis）%

99.0-100.5

99.0

Content（ on the dried basis）

97.5-100.5

99.0

Heave metals(as Pb)      ≤%   

0.0002

<0.0002

AS                    ≤%   

0.0001

<0.0001

Loss on drying(110℃,2h)          ≤%   

0..006-0.01

0.008

Iodine(potassium iodide)   %                    

        0.5   

        0.02   

Iron                   

0.0016

    <0.0016

Sodium Ferrocyanide ≤%

0.0013

    <0.0013